The Walther PDP (Performance Duty Pistol) is a striker-fired semi-automatic pistol designed by Walther Arms in 2021 as a replacement for the Walther PPQ. It is currently available for the 9×19mm Parabellum and 9×21mm IMI ammunition chamberings.

The first pre-production PDPs were distributed in 2020, and the final design was released in February 2021.

The PDP has been designed to be more modular than previous Walther handguns, and has been described by Walther as their new flagship handgun.

The PDP is a striker-fired, recoil-operated semi-automatic pistol chambered in 9×19mm Parabellum, with a longer grip and larger magazine capacity than the previous Walther PPQ design.

The PDP grip uses a custom texture, which makes acquisition of the red dot easier, and improves handling of the pistol in adverse weather conditions.

The slide on the PDP is milled, allowing it to accept red dot sights without prior modification, and the slide contains serrations above the surface, making it easier to operate.

The three-dot iron sight line features the same mounting method that is used on Glock pistols, meaning the PDP can accept aftermarket Glock iron sight lines.

The trigger is cross-compatible with the PPQ, but is lighter due to a shortened takeup. It has a trigger pull of approximately 25 N (5.6 lb_f).